<require>Class</require>

<script>
    var A = Class({
        initialize: function A(name) {
            this.name = name;
        }
    });

    var B = A.extend({
        className: 'B',
        initialize() {
            this.callSuper(A, 'initialize', arguments);
        }
    });

    var b = new B('test');

    console.log(b);
    console.log(b + '');
</script>
